/*
	jQuery TextAreaResizer plugin
	Converted from Drupal -> textarea.js
	Found source: http://redesrevolucionarias.com/public/js/jquery/plugins/hoverIntent.js
*/
(function($) {
	/* private variable "oHover" used to determine if you're still hovering over the same element */
	var textarea, staticOffset;  // added the var declaration for 'staticOffset' thanks to issue logged by dec.
	var iLastMousePos = 0;
	var iMin = 32;
	var grip;
	/* TextAreaResizer plugin */
	$.fn.TextAreaResizer = function() {
		return this.each(function() {
		    textarea = $(this).addClass('processed'), staticOffset = null;

		    $(this).wrap('<div class="resizable-textarea"><span></span></div>')
		      .parent().append($('<div class="grippie"></div>').bind("mousedown",{el: this} , startDrag));

		    var grippie = $('div.grippie', $(this).parent())[0];
		    grippie.style.marginRight = (grippie.offsetWidth - $(this)[0].offsetWidth) +'px';

		});
	};
	/* private functions */
	function startDrag(e) {
		textarea = $(e.data.el);
		textarea.blur();
		iLastMousePos = mousePosition(e).y;
		staticOffset = textarea.height() - iLastMousePos;
		//textarea.css('opacity', 0.25);
		$(document).mousemove(performDrag).mouseup(endDrag);
		return false;
	}

	function performDrag(e) {
		var iThisMousePos = mousePosition(e).y;
		var iMousePos = staticOffset + iThisMousePos;
		if (iLastMousePos >= (iThisMousePos)) {
			iMousePos -= 5;
		}
		iLastMousePos = iThisMousePos;
		iMousePos = Math.max(iMin, iMousePos);
		textarea.height(iMousePos + 'px');
		if (iMousePos < iMin) {
			endDrag(e);
		}
		return false;
	}

	function endDrag(e) {
		$(document).unbind('mousemove', performDrag).unbind('mouseup', endDrag);
		textarea.css('opacity', 1);
		textarea.focus();
		textarea = null;
		staticOffset = null;
		iLastMousePos = 0;
	}

	function mousePosition(e) {
		return { x: e.clientX + document.documentElement.scrollLeft, y: e.clientY + document.documentElement.scrollTop };
	};
})(jQuery);